My mother had her doses recorded under different numbers. Each number on Cowin therefore showed a first dose taken. The hospital was able to edit the info to show two shots under 1 number and provide the certificate - (Cowin has only now announced the facility of merging 1 person's
data under 2 numbers).
Similar experience for my Dad(80+ years) in Bengaluru kerala . He had first dose in April followed by 2nd dose after 4+ weeks. somehow got messed u with vaccination doses numbers. He got it at a local private hospital near home. My elder brother did all the work to get it. The hospital assured him and my brother not to worry. This will be rectified in time. Now his 2 doses are reconciled correctly.
He paid Rs 250 for each dose. He recd covishield vaccine.
He was asked to stayed for 1 hr post vaccination. no issues. He did have some pain in his arm post vaccination. No fever or other issues.